During the "Thirteenth Five-Year Plan" period, the development of China's automobile industry has achieved positive results, from the industrial scale to automobile sales are leading the world, the automobile industry system is gradually improving, the technical level is significantly enhanced, the national brand is fully developed, and the quality and influence have been greatly improved. However, in terms of key electronic control components of the automobile chassis, there are still problems such as insufficient core technology innovation capabilities and the need to enhance the influence of national brands. Key components rely on foreign imports, and the core technology cannot be independent, which is bound to be subject to people everywhere.
As an industry insider who has been deeply involved in the field of automotive research for many years, Li Liang, professor of the School of Vehicles and Vehicles of Tsinghua University, deputy director of the State Key Laboratory of Automotive Safety and Energy Conservation, and director of the Institute of Vehicle and Transportation, is well aware of its stakes. Over the years, he has led the team to focus on the core technology of automotive chassis electronic control products, continued to conduct in-depth research on automotive dynamics and control, intelligent car chassis wire control and dynamic domain control, actively promoted the independent industrialization of automotive intelligent safety core products, and made eye-catching contributions to the core technology innovation and industrial landing of the national automobile industry.
Li Liang
Tigers dare to compete first
In 2003, the domestic automobile industry has just experienced the initial development stage of large-scale introduction of foreign technology, and the automobile market has shown a prosperous scene. At that time, Li Liang, who had just entered the Department of Automotive Engineering of Tsinghua University to pursue a doctorate, realized that in order to promote the real development of the national automobile industry, he would eventually grasp the key core technologies in his own hands. As the main component of the car, the automotive chassis electronic control system is closely related to the handling stability and safety of the car. As a result, since his doctoral period, Li Liang has begun to track and study the technologies related to automotive dynamics control and ESC (Electronic Stability Braking System) products.
In 2008, the scale of the automobile market was further expanded, which greatly stimulated the domestic demand for independent innovation in automotive technology. Li Liang, who has graduated with a doctorate and stayed at Tsinghua University to teach, faced with this favorable trend, he was excited to start forming his own research team. On the one hand, he continued to lead the team of graduate students to conduct research on vehicle dynamic control; on the other hand, in the face of the trend of automobile electrification, he organized a team to tackle the core technology of commercial vehicle hybrid.
After more than ten years of accumulation and research, Li Liang and his team have accumulated very solid theories and technologies in the theory of automobile dynamics and chassis electronic control. They explored the critical instability mechanism of the automobile under the extreme working conditions, proposed the vehicle dynamic stabilization control method, and extended the stability control boundary of the vehicle to the critical area of instability, laying a theoretical foundation for the research of automotive ESC technology. "Industrialize scientific research and make substantial contributions to the automotive industry." This is Li Liang's wish for many years. Therefore, Li Liang and his team also studied the electromechanical-hydraulic coupling design method and dynamic regulation mechanism of high-speed switching valve, developed China's first ESC product, broke the monopoly of Bosch, ZF and other companies in one fell swoop, and realized the independent industrialization of core electronic control components in China's automotive industry. In addition, more than 20 models of more than 10 national vehicle companies such as Dongfeng, Jianghuai and Changan have also applied ESC technology. Because of the large-scale industrial application of ESC technology, in 2017, Li Liang won the first prize of the Chongqing Science and Technology Progress Award as the first person to complete it.
At the same time, in terms of commercial vehicle hybrid technology, after continuous research and innovation, Li Liang and his team proposed the efficient zone expansion mechanism of the 8-mode parallel configuration, and developed an 8-mode hybrid system assembly with better performance than the 5-mode system of Eaton in the United States. In 2011, the team's doctoral students founded Suzhou Green Control Transmission Technology Co., Ltd., through the in-depth combination of production, education and research, the team has expanded the parallel hybrid, hybrid hybrid, multi-stop pure electric and multi-stop electric drive axle four types of products, matching models of 5 to 100 tons, comprehensive coverage of various types of commercial vehicles. Suzhou Green Control has also built China's first fully independent commercial vehicle hybrid assembly production line, becoming the second enterprise in the world with commercial vehicle parallel hybrid system technology after Eaton in the United States, breaking the international monopoly in one fell swoop, and its products are applied to Dongfeng, Zhongtong, Jinlong and other domestic car companies on a large scale, and also exported to Spain, Australia, South Korea and other international markets in batches, making outstanding contributions to the international market for the national automobile industry. In 2019, the team achievement led by Li Liang won the second prize of the National Science and Technology Progress Award for "Key Technologies of Commercial Vehicle Mechanical Automatic Variable Speed Hybrid System Assembly and Its Industrialization Application".
Seeking truth and pragmatism is Li Liang's outstanding scientific research characteristics, and his keen scientific research foresight and the action of keeping up with the development of the times and actively integrating into the national automobile industry to become bigger and stronger are the key reasons for his achievements one after another. Looking back on the past, for more than ten years, I have a fierce tiger in my heart and have courage and perseverance. Under the leadership of Li Liang, the small team of several people has developed into an elite scientific research team with more than 60 people, with solid theoretical foundation and rich engineering experience in automotive technology. So far, they have achieved fruitful results: more than 100 invention patents; more than 120 SCI papers, more than 3,000 SCI citations, 5 ESI highly cited papers; 1 second prize of the National Science and Technology Progress Award, 3 first prizes of provincial and ministerial science and technology awards; transformation of innovative achievements of 23 million patent license fees, incubation of 3 national high-tech enterprises. On the road of independent research and development of core technologies in the national automobile industry and industrial landing, Li Liang and his team have gone farther and farther.
Product route and planning of Intron Huizhi Automotive Technology Co., Ltd
Keep up with the times and seek development
Intelligent network technology has brought about a subversive change in the automotive industry, and it is an important period for the development of intelligent networked vehicle technology. There are many self-driving cars on the market, but the pile of self-driving accidents also means that the related technology is immature. How to improve the safety, flexibility and efficiency of intelligent and connected vehicles is a new challenge facing researchers. In the new stage of automobile development, it is the consensus of Li Liang and his team to continue to tackle key core technologies and industrial applications.
To this end, Li Liang and his team founded Tianjin Intron Huizhi Automobile Technology Co., Ltd., which is committed to innovation and product research and development in the fields of automotive dynamic control, advanced chassis electronic control, automotive intelligent active safety and other technologies. Under the wave of automobile intelligence and electrification, the electronic control and wire control technology of the automobile chassis are particularly important, but it is also the short board and "card neck" technology of China's automotive industry.
At present, the international situation is tense, the shortage of automotive chips and other factors have led to frequent supply cuts by foreign suppliers, and China's independent brand automobile industry has been deeply affected, and it is imperative to develop independent and controllable core technologies for key auto parts. Yingchuang Huizhi will focus on the research and development and production of automotive chassis electronic control and wire control products, truly achieve the independent control of core technologies, break the dilemma of key components being controlled by people, and contribute to the rise of the national automobile industry.
At the same time, Li Liang also led the team to continue to focus on the two new concepts of full vector wire control and dynamic domain control of intelligent vehicles on the basis of the previous research results, and carried out in-depth exploration of the innovative design of configuration, the development of key components, the system operation control and the construction of the full vector wire control chassis test platform, hoping to explore the wire control chassis with inherent safety and truly solve the safety problem of intelligent cars under extreme working conditions.
Expert Profile:
Li Liang, Professor of Tsinghua University, Doctoral Supervisor, Deputy Director of the State Key Laboratory of Automotive Safety and Energy Conservation, Director of the Institute of Vehicle and Transportation, Innovation Leader of the National "Ten Thousand Talents Program", Winner of the National Outstanding Youth Fund, and Inducted by the New Century Excellent Talents Program of the Ministry of Education. His research focuses on basic theories and core technologies in the fields of automotive dynamics and control, electromechanical coupling drive/brake control of new energy vehicles. In the past 15 years, we have been committed to promoting the independent industrialization of the core products of advanced automotive intelligent safety control systems, and hope to do meaningful work for the core technologies of the national automobile industry to be independent and controllable.